Q
Qunyang Li
Researcher at Tsinghua University
Publications - 127
Citations - 7596
Qunyang Li is an academic researcher from Tsinghua University. The author has contributed to research in topics: Graphene & Tribology. The author has an hindex of 32, co-authored 96 publications receiving 5250 citations. Previous affiliations of Qunyang Li include Brown University & University of Pennsylvania.
Papers
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Journal ArticleDOI
Frictional Characteristics of Atomically Thin Sheets
Changgu Lee,Qunyang Li,William B. Kalb,Xin-Zhou Liu,Helmuth Berger,Robert W. Carpick,James Hone +6 more
TL;DR: In this article, the authors compared the nanoscale frictional characteristics of atomically thin sheets of graphene, molybdenum disulfide (MoS2), niobium diselenide, and hexagonal boron nitride exfoliated onto a weakly adherent substrate (silicon oxide) to those of their bulk counterparts.
Journal ArticleDOI
The evolving quality of frictional contact with graphene
Suzhi Li,Qunyang Li,Robert W. Carpick,Peter Gumbsch,Xin Z. Liu,Xiangdong Ding,Jun Sun,Ju Li,Ju Li +8 more
TL;DR: Atomistic simulations reproduce the experimental observations of layer-dependent friction and transient frictional strengthening on graphene and reveal that the evolution of static friction is a manifestation of the natural tendency for thinner and less-constrained graphene to re-adjust its configuration as a direct consequence of its greater flexibility.
Journal ArticleDOI
Epitaxial growth of a 100-square-centimetre single-crystal hexagonal boron nitride monolayer on copper.
Li Wang,Li Wang,Xiaozhi Xu,Leining Zhang,Ruixi Qiao,Muhong Wu,Zhichang Wang,Shuai Zhang,Jing Liang,Zhihong Zhang,Zhibin Zhang,Wang Chen,Xuedong Xie,Junyu Zong,Yuwei Shan,Yi Guo,Marc Georg Willinger,Hui Wu,Qunyang Li,Wenlong Wang,Peng Gao,Shiwei Wu,Yi Zhang,Ying Jiang,Ying Jiang,Dapeng Yu,Enge Wang,Xuedong Bai,Zhu-Jun Wang,Feng Ding,Kaihui Liu +30 more
TL;DR: The epitaxial growth of large single-crystal hexagonal boron nitride monolayers on low-symmetry copper foils is demonstrated and is expected to facilitate the wide application of 2D devices and lead to the epitaxials growth of broad non-centrosymmetric 2D materials, such as various transition-metal dichalcogenides20–23, to produce large single crystals.
Journal ArticleDOI
Elastic and frictional properties of graphene
TL;DR: In this article, the elastic properties and frictional properties of graphene samples of varying thickness using an atomic force microscope were investigated for tensile testing, and it was shown that the frictional force between an AFM tip and graphene decreases with thickness for samples from 1 to 4 layers, and does not depend on the presence of a substrate.
Journal ArticleDOI
Iced photochemical reduction to synthesize atomically dispersed metals by suppressing nanocrystal growth
Hehe Wei,Kai Huang,Da Wang,Ruoyu Zhang,Binghui Ge,Jingyuan Ma,Bo Wen,Shuai Zhang,Qunyang Li,Ming Lei,Cheng Zhang,Joshua Irawan,Li-Min Liu,Hui Wu +13 more
TL;DR: A facile approach is demonstrated to generate atomically dispersed platinum via photochemical reduction of frozen chloroplatinic acid solution using ultraviolet light to obtain atomically-dispersed platinum catalysts with high electrocatalytic performance.